Type bed bearer



July 11, 193 c. B. JOHNSON El AL TYPE BED BEARER Filed Sept. 12, 1931 2 Sheets-Sheet l ESTER B JOHNSON LVlN H. BgYANT ATTORNEYS July 11, c B JOHNSON r AL TYPE BED BEARER A 29- 7 110 z; 1 N} 44 l (NVENTORS V zz'safs 1. F2 $22 9 15 46' ATTORNEYS Patented July 11, 1933 UNITED STATES:

RATENT. orFIcE;

CHESTER/TB: JOHNSON, OF .HASBROUCK HEIGHTS, AND CALVIN BRYANT; OF JERSEY.

CITY, NEXVJERSEY,v ASSIGNORS=TQ-RUSSELL SUPPLY 00., ING, OEJN'EW YORK, N. Y.,

A CORPORATION OF NEWYORK',

TYPE BED BEARER Application filed September 12, 1931 S'riaLNii; 562,444.

This invention relates to improvements 111% bed bearers for printing presses of the type havingan impression cylinder and a co0per= ating, reciprocable type bed.

Important objects of the invention are to provide type bed bearers designed to -inr-z provethe quality of the printing and prevent injuryito the type; :to provide such bearers havingnninterrupted bearing surfaces insuringr; equalized distribution :o'ffwear there along; to: provide such bearerszdesigned to prevent yielding thereof under the pressure of the impression cylinder and consequent uneven printing; and: to provide such'bearers witlrniountings thQIGlOI designed to fat-- cilitate the installation of the bearers between the type bed andtheiinpression cylinder.

Other-objects of theinvention: will appear" hereinafter;

In thedrawings, Fig. 1 is a diagrammaticlongitudinal section taken through a portion of a printing press-and showing an impressioncylinder anda typebed equippednvith:

Fig; 3 an enlargeddetail sectional: vieW= showingone of the design features facilitate ingthe installation of tne bearers;

Fig. 4: a plan View of a portionof the type bed with the bearers mounted thereon together nth a type torni set-up;

Fig. 0 the'line 55 ofFlgl;

Fig. 6' a section-taken on' the line 66 of leading end of the bar and eXtends to apomt Fig. 0 Fig.

line 77 of 'Fig.- 1

Fig. 8 a view similar to Fig.:5,:sh0Wing;.

a slight inodificationot the bearer bar mount-- ingr Ina printing press of the bed and cylinder type; the bearers form track rails for the impression cylinder; and are 'intended to limit the printing depression of the cylinde'r and preservea unlforrnrelationshipibetween the cylinder and the type foflnsrluringya printing operation. l-leretofore lthas been an enlarged cross-section taken on:

7 1 an enlarged section taken-om the 1 holes opening through :the top surfaces of.- bearers. These holes'reduce-the bearingaare'a at points along: the'bearersnnd' consequently;

' the bearers are more rapidly worn down at,-

these points.- The screivh'oles also Weaken the bearerszandoften cause them I to crack or break; It hasrbeen'iiound that fthe unevenv I Wearing down: of= the bearerscausesuneven printing and injuryto'the type as it permits the impression cylinder to depress slightly. farther at the Worn -points.-. A'wear'dow'nw of as little a thousandthaof ancinch is sometimes sufficientto man the printinggfand Wear- 0f "several thousandths of aninch Willzf often cause injurys'to 'the typeralso'. The" present improved bearers have been devised to prevent this obj ectionable wear and satisfy-= all of tho fine practical requirement-s of the service.

Referring to 1 to 7 inolusivmixthe bearers are two .straight-nn'etal bars 1 of square or rectangular cross section and each having a. flat," snioothgr uninterrupted bear ingface 2.and flat; smooth under faoe torest 'upon' the fiat upper surface of "the typobed', designated B; Each bar has the usual 'cleft 4 at its leading end "renderingiit yieldable and springy under theimpression cylinder *(l' A' description of one bar will" suffice-for both. At its under side' the bar has a row of i ertical sockets 5 equally spacedalone the bar and centered transversely thereof. The row'of sockets begins at a-point' spaced a inaterial dis mice from the cleft adjacent the oppositeend of the bar; Iii

the-present instance there-are four sockets but the number inay bevariedf Each-socket is' cylindrical and terminates inaterially'b'e' neath the bearingsurface-2. At one 'of its-' lateral .or side faces, preferably. the inner one, the bar h as a row ot transverse threaded apertures B each openingtangentially into one ofthe sockets 5 andterniinating mateiii-ally '1 short' of zthe opposite lateral face I of I the! bar. Thesea threaded aperturesa-are spaced only slightly abovethe underiace of the-bans. Screwed into each-apertureis'waa setscrewn'l' :having a socket 'in [its outer end to receive a tool for screwing it, and a conical inner end 8.

At an intermediate point one of the bars has a flat, approximately rectangular recess 9 in its inner lateral face. This recess opens through the underface of the bar but terminates below the upper face 2. A clamping plate 10 is adapted to fit in the recess with its lower edge slightly above the lower face of the bar to clear the type bed. For support ing and adjusting the clamping plate, there is a screw 11 screwed into a threaded aperture 12 extending from the recess to the opposite face of the bar and swiveled to the'plate, as at 13. This screw also has a tool-receiving socket in its outer end.

In its opposite side margins the type bed B has two parallel rows of threaded apertures 14 whose spacing corresponds to that of the sockets 5. In each aperture 1st. is a stud 15 having a threaded shank 16 screwed into the aperture, and a head 17 projecting from the upper surface of the type bed and forming a shoulder 18 at its juncture with the shank positively limiting the screwing in of the shank and binding against the bed to prevent unscrewing. The stud head has a circumferential groove 19 transversely curved in cross section and, above and below said groove, the head has cylindrical portions 20 and 21 of a diameter for entering the bar sockets 5 and fitting them closely. The height of the stud heads is less than the depth of said sockets.

The bearers are designed in the present instance for mounting upon a standard Kelly press without any alterations therein and without demounting the impression cylinder. In the press, the impression cylinder in nonprinting position has a definite separation from the bed and from the bearers, which only slightly exceeds the depth of the bearers. It is required that the leading end portions of the bearers be mounted in this limited separation space and our bearers have been designed to provide for this installation without difliculty and at the same time afford the advantage of uninterrupted bearing surfaces. In the installation of each bar its leading end is inserted under the cylinder, tilted as shown in Fig. 2, and rocked down to fit the sockets 5 over the stud head. There is a correlation of the height of the stud heads, the location and proportions of the stud grooves 19, and the separation of the cylinder from the type bed which enables the installation of the bars in the limited space available, and without a sacrifice of strength in the bar mountings. The height of the stud heads is, in the present instance, approximately sevensixteenths of an inch and the grooves 19 are located only slightly below the tops of the heads. The bars are then placeable over the stud heads and under the cylinder and are rockable downward over the stud heads. The grooves 19 provide clearance for an edge of the tilted sockets 5, as shown in Fig. 3, and enable the sockets, formed for closely fitting the stud head, to be pulled down over the latter.

Having placed the bars over the stud heads, the setscrews 7 are screwed in to engage the heads and fasten down the bars. The grooves 19 and the setscrews are formed and disposed to cooperate for this purpose. The center line of the setscrew is spaced above the under face of the bar equally with the space between the center line of the groove and the face of the type bed. The center line of the setscrew is also transversely spaced slightly from the bottom of the groove so that the point of the setscrew will not engage the groove. IVhen the setscrew is tightened the conical end thereof makes a camming sidewise engagement with the stud groove which reacts to pull the bar down closely upon the type bed and firmly hold it there. If the bed is not absolutely flat the bars will be warped slightly by said fastening means into close engagement with the bed. It is imymrtant that the bars follow the surface of the bed closely in order to support the impression cylinder-in proper relation to the type forms which are also supported by the bed. The stud-receiving sockets entirely surround the studs and fit them closely to positively hold the bearers against lateral displacement inany direction on the bed and maintain them in accurate relation to the impression cylinder. I

In Fig. 8 the setscrew is shown in a position with its center line spaced above the under face of the bearer bar a distance slightly exceeding the normal space between the center of the stud groove and the type bed. This enables the setscrew to compensate for slight inequalities or irregularities and insures the pulling of the bearer bar tight against the type bed.

It will be seen that we have provided bearcrs having the desired uninterrupted bearing surfaces with equalized distribution of wear, that the bearers are strong, durable and unyielding under the cylinder pressure, that effective means are provided for drawing the bars accurately into place upon the bed, and that the bearers are at the same time capable of easy installation.

In Fig. 4 a type form 22 is shown mounted upon the type bed between the bearer bars and held in a frame 23 by suitable quoins 2 1.

he clamping plate 10 is forced by its screw 11 against the frame 23 to press the latter against a spacing strip 25 interposed between the frame and the opposite bearer bar.

What we claim is:

1. In a printing press including an impression cylinder and a cooperating relatively reciprocable type bed, a bearer bar disposed IZU upon the bed and having sockets spaced therealong in its under face and terminating short of the bearing face of the bar, and threaded apertures in a lateral face of the bar opening into said sockets; studs having threaded shanks screwed into the type bed and projecting heads snugly fitting in said sockets and each having a circumferential groove and a shoulder positively limiting the screwing of the stud shank into the bed to locate said groove in a definite position spaced from the bed, the walls of the sockets surrounding said studs to hold the bar against lateral displacement in any direction; and set screws screwed into said threaded apertures and having tapered inner ends tangentially engaging the grooved stud heads and cooperating with the grooves hold the bar close against the bed.

2. in a printing press including an impression cylinder and a cooperating relatively reciprocable type bed and wherein the cyliir der has a limited separation from the bed, a pair of bearer bars disposed upon the bed between ti e bed and *cylinder and having sockets spaced along them in their under 'ides and terminating short of the bearing faces of the bars and threaded apertures in a hit oral face of each bar opening tange tiallv into said sockets; studs having threaded shanks screwed into the type bed and projecting heads snugly fitting in the sockets of the bars and each having a circumterennal groove, the walls or" the sockets surrounding said studs to hold the bar against lateral displacement in any direction; means positively limiting the screwing of the stud shanks into the bed to locate the stud grooves in positions definitely spaced from the bed; and setscrews screwed into said threaded apertures and having tapered inner ends tangentially engaging the grooved stud heads and cooperatin with the grooves to hold the bar rinse ag; st the bed, the projecting leng h of the stud heads being correlated with the limited separation of the cylinder from the bed to permit mountii of the bars by tiltin them, inserting their ends under the cylir re; and rocking them into position over the stud heads.

in a printing press including an impression cylinder and a cooperati g clatively reeiprorabl type bed, a bearer bar disposed upon the bed and h aviug secl 3th spa-"- along in its under face andterminating short of the bearing face of the bar, and threaded apertures in a lateral face of. the bar opening into said sockets; studs projecting from the type bed, snugly fitting in said sockets and each having a concavityin its periphery,

ed therethe walls of the sockets surrounding said studs to hold the bar against lateral displacement in any direction; and setscrews screwed into said threaded apertures and having tapered inner ends making tangential Wedging engagement with the studs in the concavities thereof to hold the bar close against the bed. 7

4. In a printing press, a type bed, a bearer bar disposed upon the bed and having sockets in its under face terminating short of the upper face of the bar; studs projecting from the bed and snugly fitting in said sockets, the' walls of the sockets surrounding said studs to hold the bar against lateral displacement in any direction; and releasable locking means between the bar and studs holding the bar close against the bed.

5. In a-printing press including an impression cylinder and a cooperating relatively reciprocable type bed and wherein there is a limited normal clearance between the bed and cylinder, a bearer bar disposed upon the bed between the latter and the cylinder and having longitudinally spaced sockets in its under face; fixed studs projecting from the bed and fitting in said sockets, the walls of the sockets surrounding the studs to hold the bar against lateral displacement in any direction; and releasable locking means be tween said studs and the bar for holding the bar closely against the bed, the projecting length of the studs and the clearance between the bed and cylinder being correlated. to permit mounting of the bar by tilting it, inserting an end thereof through the clearance space and rocking the bar into position over the studs.

6. bearer for thetype bed of a press comprising a bar having longitudinally spaced sockets in its under face and termi natiug short of its bearer face and threaded apertures in a lateral face of the bar opening tangentially into said sockets; studs having threaded shanks for screwing into apertures of the type bed and heads for fitting in said sockets and each having a circumferential groove, the walls of the sockets surrounding the studs to hold the bar against lateral displacement in any direction; and setscrews for screwing into the threaded apertures of the bar having tapered ends tangentially engageable in the grooves of the stud heads and cooper-able therewith for drawing the bar close against the type bed when the setscrews are tightened.

In testimony whereof we hereunto aflix our signatures this 21st day of August, 1931.

CHESTER B. JOHNSON. CALVIN H. BRYANT. 

